Reaction of Red Clover to<i>Aphanomyces euteiches</i>

Tofte, J. E.

doi:10.1094/pd-76-0039

Cited by 11 publications

(6 citation statements)

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“…Several authors also reported A. euteiches to be a pathogen of alfalfa ( Medicago sativa ) (Greenhalgh & Merriman, 1985), green bean ( Phaseolus vulgaris ) (Pfender & Hagedorn, 1982), broad bean ( Vicia faba ) (Lamari & Bernier, 1985) and clover ( Trifolium pratense , Tofte et al ., 1992; and Trifolium subterraneum , Burnett et al ., 1994). Many control measures have been tested (Papavizas & Ayers, 1974), but the only efficient way to control the disease identified to date is to avoid planting peas in contaminated fields and to ensure that there is an appropriate time interval between successive pea crops in the rotation (Carrouée et al ., 1995).…”

Section: Introductionmentioning

confidence: 98%

Pathogenic characteristics of isolates of Aphanomyces euteiches from pea in France

2001

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Aphanomyces root rot (Aphanomyces euteiches) has become a very destructive disease in French pea crops since 1993. The host specificity of the French pea-infecting populations of this pathogen was investigated by inoculating pea, common vetch, alfalfa, broad bean and green bean with 91 pea-infecting A. euteiches isolates, originating from the main areas of infestation in France. These isolates were compared to 13 isolates from various countries and hosts (pea, green bean, alfalfa). Virulence phenotypes were defined according to the pathogenicity data on the different hosts: all isolates from France infected two to five legume species, with most infecting pea, vetch, alfalfa and broad bean. Four pathotypes were characterized within the French isolates: one type corresponded to broad host range isolates, the second was composed of isolates preferentially agressive on pea/vetch/alfalfa and weakly aggressive on broad bean, and two others corresponding to more specialized isolates that preferentially infected pea/vetch or pea/vetch/alfalfa. Most isolates from France were preferentially pathogenic on pea, like the pea-infecting isolates from other countries, but were less specialized than the alfalfa-and green bean-infecting isolates from other countries. These results suggest that A. euteiches isolates may be maintained on wild or cultivated legumes other than pea in France.

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Section: Introductionmentioning

confidence: 98%

Pathogenic characteristics of isolates of Aphanomyces euteiches from pea in France

2001

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“…Aphanomyces euteiches has been isolated from a number of legume species: pea Levenfors et al 2003), faba bean (Salt and Delaney 1985;Lamari and Bernier 1985), vetch (Levenfors et al 2003), lentil (Lamari and Bernier 1985), alfafa (Malvick et al 1998), French bean (Salt and Delanay 1985), red clover (Tofte and Smith 1992), subterranean clover (Greenhalgh et al 1985), barrel medic (Moussart et al 2007) and several other plants (Chan and Close 1987). Isolates from different species may display some specificity for the species from which they were isolated.…”

Section: Introductionmentioning

confidence: 99%

Reaction of genotypes from several species of grain and forage legumes to infection with a French pea isolate of the oomycete Aphanomyces euteiches

2008

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The susceptibility/resistance to Aphanomyces euteiches of various genotypes (cultivars and breeding lines) of several grain legume species was assessed in controlled conditions. A total of 279 genotypes from the major grain legumes grown in temperate climates (faba bean, chickpea, lentil, lupin and common vetch) and three other legumes frequently cultivated in France (French bean, clover and alfalfa) were screened with one pea-infecting isolate from France. Four different categories of susceptibility/resistance were identified among the legume species/cultivars tested with the pea A. euteiches isolate: (1) susceptible legume species (lentil, alfalfa, French bean) among which low levels of partial resistance was observed; (2) legume species including susceptible genotypes and genotypes with high levels of resistance (common vetch, faba bean and clover), (3) species with a very high level of resistance (chickpea) and (4) species displaying no symptoms (lupin). It is therefore important to consider pathogen-species and pathogengenotype interactions when defining the host specificity of A. euteiches and considering the possible role of different legume species in increasing or decreasing the soil inoculum potential.

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“…A. euteiches is the most devastating pathogen of pea in several countries, with yearly losses that average 10% to 80% each year [16,172]. Significant yield losses have also been reported in alfalfa [220], clover [221], fava beans [222], and lentils [223]. Like A. cochlioides, A. euteiches is a strictly soil-borne pathogen that may survive up to 10 years in soil [26], and no efficient chemical control is currently available.…”

Section: Oomycetesmentioning

confidence: 99%

Understanding Root Rot Disease in Agricultural Crops

Williamson-Benavides¹,

Dhingra²

2020

Preprint

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Root rot diseases remain a major global threat to the productivity of agricultural crops. They are usually caused by more than one type of pathogen and are thus often referred to as a root rot complex. Fungal and oomycete species are the predominant participants in the complex, while bacteria and viruses are also known to cause root rot. Incorporating genetic resistance in cultivated crops is considered as the most efficient and sustainable solution to counter root rot; however, resistance is often quantitative in nature. Several genetics studies in various crops have identified quantitative trait loci associated with resistance. With access to whole genome sequences, the identity of the genes within the reported loci is becoming available. Several of the identified genes have been implicated in pathogen response. However, it is becoming apparent that at the molecular level, each pathogen engages a unique set of proteins to either infest the host successfully or be defeated or contained in doing so. In this review, a comprehensive summary of the genes and potential mechanisms underlying resistance or susceptibility against the most investigated root rots of important agricultural crops is presented.

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Reaction of Red Clover toAphanomyces euteiches

Cited by 11 publications

References 0 publications

Pathogenic characteristics of isolates of Aphanomyces euteiches from pea in France

Pathogenic characteristics of isolates of Aphanomyces euteiches from pea in France

Reaction of genotypes from several species of grain and forage legumes to infection with a French pea isolate of the oomycete Aphanomyces euteiches

Understanding Root Rot Disease in Agricultural Crops

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